Genetic variability to assist in the delineation of provenance regions and selection of seed stands and gene conservation units of wild service tree (Sorbus torminalis (L.) Crantz) in southern Germany

2021 ◽  
Author(s):  
Darius Kavaliauskas ◽  
Muhidin Šeho ◽  
Roland Baier ◽  
Barbara Fussi
Keyword(s):  
Genetic Variability ◽  
Gene Conservation ◽  
Conservation Units ◽  
Southern Germany ◽  
Sorbus Torminalis ◽  
Wild Service Tree ◽  
Selection Of

scholarly journals Selection of coffee progenies for resistance to nematode Meloidogyne paranaensis in infested area

2014 ◽  
Vol 14 (2) ◽  
pp. 94-101 ◽  
Author(s):  
Sonia Maria Lima Salgado ◽  
Juliana Costa de Rezende ◽  
José Airton Rodrigues Nunes
Keyword(s):  
Genetic Variability ◽  
Coffea Arabica ◽  
Mixed Model ◽  
High Rate ◽  
Germplasm Bank ◽  
Genotypic Association ◽  
Coffee Plants ◽  
Plagiotropic Branches ◽  
Mixed Model Methodology ◽  
Selection Of

The purpose of this study was to select Coffea arabica progenies for resistance to M. paranaensis in an infested coffee growing area using Henderson's mixed model methodology. Forty-one genotypes were selected at the Coffee Active Germplasm Bank of Minas Gerais, and evaluated in regard to stem diameter, number of plagiotropic branches, reaction to the nematode, and yield per plant. There was genetic variability among the genotypes studied for all the traits evaluated, and among the populations studied for yield and reaction to the nematode, indicating possibilities for obtaining genetic gains through selection in this population. There was high rate of genotypic association between all the traits studied. Coffee plants of Timor Hybrid UFV408-01 population, and F3 progenies derived from crossing Catuaí Vermelho and Amphillo MR 2161 were the most promising in the area infested by M. paranaensis.

Micropropagation of Wild Service Tree (Sorbus torminalis [L.] Crantz): The Regulative Role of Different Aromatic Cytokinins During Organogenesis

2009 ◽  
Vol 28 (4) ◽  
pp. 341-348 ◽  
Author(s):  
Jana Malá ◽  
Pavlína Máchová ◽  
Helena Cvrčková ◽  
Michal Karady ◽  
Ondřej Novák ◽  
...  
Keyword(s):  
Sorbus Torminalis ◽  
Aromatic Cytokinins ◽  
Wild Service Tree ◽  
Regulative Role

scholarly journals Selection of best lines and hybrids on the basis of genetic variability analysis in Maize (Zea mays L.)

2020 ◽  
Vol 5 (01) ◽  
pp. 45-49
Author(s):  
Ankit Kumar ◽  
Amit Tomar
Keyword(s):  
Zea Mays ◽  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Grain Weight ◽  
Variability Analysis ◽  
Selection Of

The results revealed that parents namely, TSK-10, TSK-27, New Blue-II, Kurara and TSK-109 were found highly genetic diverse for days to 50% tasseling, days to 50% silking, days to 755 dry husk. The parents namely, TSK-109, Kurara, New Blue-II and TSK-10 were found highly genetic diverse for plant height (cm), cob height, number of cobs per plant and number of grains per cob. The parents namely, Kurara, TSK-109, TSK-10, New Blue-II and TSK-27 were found highly genetic diverse for shelling percentage, grain yield per plant, grain yield per cob and 100-grain weight.

scholarly journals Potential exists to change, through breeding, the yield of individual primal carcass cuts in cattle without increasing overall carcass weight1

2019 ◽  
Vol 97 (7) ◽  
pp. 2769-2779 ◽  
Author(s):  
Michelle M Judge ◽  
Thierry Pabiou ◽  
Jessica Murphy ◽  
Stephen B Conroy ◽  
P J Hegarty ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Genetic Variability ◽  
Genetic Correlations ◽  
Carcass Weight ◽  
High Heritability ◽  
The Mean ◽  
Estimated Breeding Values ◽  
Coefficient Of Genetic Variation ◽  
Selection Of ◽  
Carcass Cuts

Abstract The ability to alter the morphology of cattle towards greater yields of higher value primal cuts has the potential to increase the value of animals at slaughter. Using weight records of 14 primal cuts from 31,827 cattle, the objective of the present study was to quantify the extent of genetic variability in these primal cuts; also of interest was the degree of genetic variability in the primal cuts adjusted to a common carcass weight. Variance components were estimated for each primal cut using animal linear mixed models. The coefficient of genetic variation in the different primal cuts ranged from 0.05 (bavette) to 0.10 (eye of round) with a mean coefficient of genetic variation of 0.07. When phenotypically adjusted to a common carcass weight, the coefficient of genetic variation of the primal cuts was lesser ranging from 0.02 to 0.07 with a mean of 0.04. The heritability of the 14 primal cuts ranged from 0.14 (bavette) to 0.75 (topside) with a mean heritability across all cuts of 0.48; the heritability estimates reduced, and ranged from 0.12 (bavette) to 0.56 (topside), when differences in carcass weight were accounted for in the statistical model. Genetic correlations between each primal cut and carcass weight were all ≥0.77; genetic correlations between each primal cut and carcass conformation score were, on average, 0.59 but when adjusted to a common carcass weight, the correlations weakened to, on average, 0.27. The genetic correlations among all 14 primal cut weights was, on average, strong (mean correlation of 0.72 with all correlations being ≥0.37); when adjusted to a common carcass weight, the mean of the genetic correlations among all primal cuts was 0.10. The ability of estimated breeding values for a selection of primal cuts to stratify animals phenotypically on the respective cut weight was demonstrated; the weight of the rump, striploin, and fillet of animals estimated to be in the top 25% genetically for the respective cut, were 10 to 24%, 12 to 24%, and 7 to 17% heavier than the weight of cuts from animals predicted to be in the worst 25% genetically for that cut. Significant exploitable genetic variability in primal carcass cuts was clearly evident even when adjusted to a common carcass weight. The high heritability of many of the primal cuts infers that large datasets are not actually required to achieve high accuracy of selection once the structure of the data and the number of progeny per sire is adequate.

scholarly journals Genetic variability studies for selection of elite germplasm in sesame (Sesamum indicum L.)

2019 ◽  
Vol 81 (2) ◽  
pp. 87-104
Author(s):  
Sabrin Sultana ◽  
Firoz Mahmud ◽  
Md Abdur Rahim
Keyword(s):  
Genetic Variability ◽  
Seed Yield ◽  
Sesamum Indicum ◽  
Flowering Plant ◽  
Path Coefficient ◽  
Medicinal Value ◽  
Cluster Distance ◽  
Sesame Genotypes ◽  
Elite Germplasm ◽  
Selection Of

Sesame (Sesamum indicum L.) is one of the oldest oilseed crops and important for high nutritional quality as well as medicinal value. Fifty diverse sesame genotypes were evaluated to study genetic variability. The results revealed that the genotypes were a significant variation in most of the studied characters. In all cases, the phenotypic variances were much higher than genotypic variances suggests a higher level of the environmental effect on the expression of these characters. The highest genotypic coefficient of variations (GCV) was observed in seed yield per plant while the highest heritability was exhibited by hundred seed weight followed by days to 80% maturity, pods per plant, number of branches per plant and seed yield per plant. The genotypic correlation with seed yield per plant showed a significantly strong positive with days to 50% flowering, plant height and number of pods per plant at both the genotypic and phenotypic level. The path coefficient analysis showed that pods per plant and seeds per pod were the most important contributing traits to seed yield. The 50 sesame genotypes were grouped into five clusters. The highest inter-cluster distance was observed between the cluster III and V while the lowest inter-cluster distance was observed between the cluster III and IV. Among 50 sesame genotypes G7, G36, G38 and G46 might be suggested for future hybridization program for the improvement of sesame yield.

scholarly journals Genetic variability of a scattered temperate forest tree: Sorbus torminalis L. (Crantz)

2000 ◽  
Vol 57 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Brigitte Demesure ◽  
B�n�dicte Le Guerrou� ◽  
G�raldine Lucchi ◽  
Daniel Prat ◽  
R�my-Jacques Petit
Keyword(s):  
Genetic Variability ◽  
Temperate Forest ◽  
Forest Tree ◽  
Sorbus Torminalis

Genetic variability, principal component and cluster analyses in black gram under Foot-hills conditions of Manipur

2018 ◽  
Author(s):  
M. Samuel Jeberson ◽  
K. S. Shashidhar ◽  
Amit Kumar Singh
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Quantitative Traits ◽  
Principal Component ◽  
Yield Attributes ◽  
Eigen Values ◽  
Correlation And Path Analysis ◽  
And Cluster Analysis ◽  
100 Seed Weight ◽  
Selection Of

Analysis of genetic variability, heritability, correlation, path analysis, principal component and cluster analysis was carried for 25 blackgram genotypes grown in the foothills of Manipur. The results showed that phenotypic coefficients of variability recorded were higher than the genotypic coefficients of variability, irrespective of traits, demonstrating the effect of environment thereon. The present study revealed that the heritability (bs) estimates were maximum (>50%) for the traits such as days taken to attain the 50% flowering, number of clusters/plant, number of pods/plant and 100 seed weight. The correlation and path analysis proved the selection of the yield attributes in blackgram based on the characters, viz., number of pods/plant and number of cluster/plants. The first three principal components, having the Eigen values more than 1, contributed 84.52% towards variability among the 25 genotypes screened for quantitative traits. Based on the average linkage, 25 genotypes were grouped into five (5) clusters.

Assessment of Genetic Variability of Cell Wall Degradability for the Selection of Alfalfa with Improved Saccharification Efficiency

2012 ◽  
Vol 5 (4) ◽  
pp. 904-914 ◽  
Author(s):  
Marc-Olivier Duceppe ◽  
Annick Bertrand ◽  
Sivakumar Pattathil ◽  
Jeffrey Miller ◽  
Yves Castonguay ◽  
...  
Keyword(s):  
Cell Wall ◽  
Genetic Variability ◽  
Saccharification Efficiency ◽  
Cell Wall Degradability ◽  
Selection Of

scholarly journals Variabilidad genética y detección de error en filiación utilizando microsatélites en dos rebaños de alpacas Huacaya (Vicugna pacos)

2015 ◽  
Vol 2 (2) ◽  
pp. 134-145 ◽  
Author(s):  
Claudia Yalta ◽  
Giovanna Sotil ◽  
Eudosio Veli
Keyword(s):  
Genetic Variability ◽  
Variability Analysis ◽  
Str Markers ◽  
A Value ◽  
Vicugna Pacos ◽  
Allelic Variability ◽  
Low Levels ◽  
High Level ◽  
Pilot Center ◽  
Selection Of

Objetivo: Determinar la variabilidad genética  y evaluar la utilidad de microsatélites (STR) en la determinación de paternidad en alpacas blancas huacaya, pertenecientes al Centro Piloto de Mejoramiento Genético Munay Paqocha y el Fundo Itita, de la Sociedad Peruana de Criadores de Alpacas y Llamas (SPAR) Puno. Realizar la genotipificación y selección de marcadores STR útiles para la asignación de paternidad y parentesco. Metodología: Se evaluaron 10 marcadores STR a partir de ADN aislado de sangre y de folículos pilosos de 183 individuos colectados al azar procedentes de dos rebaños. Resultados y Conclusiones: Se observó un alto nivel de variabilidad alélica en el total de individuos analizados, y la presencia de alelos exclusivos entre poblaciones, con frecuencias menores al 1,5% en los loci LCA37, LCA90, LCA5, VOLP92, YWLL36, YWLL44 y YWLL08. Se propone la incorporación de tres marcadores adicionales, VOLP92, LCA94 y LCA90 para los análisis de variabilidad genética en alpacas. Los valores de FIS (0,016), y FST (0,003) reflejaron bajo niveles de endogamia. El rebaño del Fundo Itita presentó una mayor Ho (0,858) respecto a la He (0,848), mientras que por el contrario el rebaño del Centro Munay Paqocha presentó un menor valor de la Ho (0,815) respecto a la He (0,848), con una tendencia al déficit de heterocigotos. Los 10 marcadores presentaron una probabilidad de exclusión de parentesco adecuada, con un valor superior al 99,9%, cuando se conoce el genotipo de ambos padres, y un poder de discriminación mayor a 0,90. Además, se alcanzó un valor PEC de 0,999 considerando solo los marcadores YWLL08, YWLL44, LCA37, YWLL36, LCA8; siendo YWLL08 el de mayor valor (0,885). La prueba de filiación permitió detectar mayores errores de asignación de maternidad (13,04%) y paternidad (30,4%) en el rebaño del Fundo Itita, en comparación a Munay Paqocha con errores de designación de maternidad de 7,69% y de paternidad de 17,95%, concluyendo que este centro posee un mejor registro de empadres. ABSTRACT:Aim: To determine the genetic variability and the selection of STR markers useful for the evaluation of inbreeding, assignment of paternity and kinship, and the genotyping of two breeding herds of white huacayas alpacas Vicugna pacos, from the Pilot Center for Genetic Improvement Munay Paqocha and Fundo Itita, in Puno Perú. Methodology: 10 STR markers were assessed in 183 individuals, randomly selected. Results and Conclusions: We observed a high level of allelic variability in the total individuals, and unique alleles among populations with frequencies lower than 1.5% in loci LCA37, LCA90, LCA5, VOLP92, YWLL36, YWLL44 and YWLL08. We propose the addition of three markers, VOLP92, LCA94 and LCA90 for the genetic variability analysis in alpacas. FIS (0.016) and FST (0.003) values reflected low levels of inbreeding. Fundo Itita herd showed higher Ho (0.858) than He (0.848), while the herd of Munay Paqocha showed lower Ho (0.815) respect to He (0.848), with trending heterozygote deficit. The 10 markers showed an appropriate exclusion relationship probability, with a value greater than 99.9% when the genotype of both parents was known, and a power of discrimination greater than 0.9. In addition, a PEC value of 0.999 was reached considering only markers YWLL08, YWLL44, LCA37, YWLL36, LCA8; YWLL08 being the highest value (0.885). Filiation test detected major errors of maternity (13.04%) and paternity (30.4%) in the herd Fundo Itita. In Munay Paqocha with respect to errors designation maternity 7.69% and paternity of 17.95%, concluding that Munay Paqocha had a better record of matings.

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